Assembly Instructions

Note
In the case of focusing optics BEO D50 Smart, the flow of the
process media (purging gas, MVE gas, shielding gas and the
crossjet pressure) can be monitored within adjustable limits via
the gas monitoring module. For more information on this topic,
please refer to the software manual of the controlled focusing
optics.
Cleaned and dried compressed air is used as supplied air.
Focal length of lens
f150
Focal length of lens
≥ f200
Gap width 0.5 mm 0.3 mm
Pressure approx. 5 bar approx. 3.5 bar
Air consumption approx. 500 l/min approx. 210 l/min
Compressed air Tab. 2-4
The compressed air used must comply with the specification
according to DIN ISO 8573-1:
■
Max. particle size 1 µm
■
Max. pressure dew point 7 ℃
■
Max. oil concentration 1 mg/m
3
The required pressure depends on the formation of splatter from
the respective welding application. In some cases, the value
may exceed the indicated upper limit.
Note
Note that the indicated pressure must be available at the com-
pressed air connection. The connected hose causes a pressure
loss, depending on the length and diameter of the hose.
Detailed information about the use of shielding gas and the avail-
able shielding gas nozzles can be found in the chapter "Assem-
bly and installation" in the section "Using shielding gas" (see
"Using shielding gas", pg. 2‐42).
When required, purging gas is passed into the interior of the
crossjet below the protective glass. The purging gas reduces
fouling on the protective glass.
Usually, oil- and water-free compressed air in acc. with DIN ISO
8573-1 or nitrogen is used as purging gas.
The purging gas consumption is approx. 6 l/min.
The MDE nozzle is attached to the crossjet (MDE means metal
vapor effect).
During the laser welding process, the laser light may be
reduced or deviated due to the particles in the metal vapor
2
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Installation
2020-01 22-50-17-CRen
Crossjet
Shielding gas
Scavenging gas
MDE nozzle